fix(mysql): refresh stale snapshots and streamline table reloads

apps/desktop/src/lib/metadata/__tests__/tableMetadataCache.columns.spec.ts

@@ -55,6 +55,20 @@ describe("tableMetadataCache columns facet request counts", () => {
     mocks.listIndexes.mockResolvedValue([]);
   });
 
+  it("does not treat failed index discovery as a complete cacheable row identity", async () => {
+    mocks.getColumns.mockResolvedValue([{ ...column("id"), is_primary_key: false }]);
+    mocks.listIndexes.mockRejectedValueOnce(new Error("indexes unavailable"));
+    const failed = await loadTableMetadata(usersRequest);
+    expect(failed.metadata.rowIdentityResolved).toBe(false);
+    expect(failed.metadata.primaryKeys).toEqual([]);
+    expect(getCachedTableMetadata(usersRequest)).toBeUndefined();
+
+    const retried = await loadTableMetadata(usersRequest);
+    expect(retried.metadata.rowIdentityResolved).toBe(true);
+    expect(mocks.listIndexes).toHaveBeenCalledTimes(2);
+    expect(mocks.getColumns).toHaveBeenCalledOnce();
+  });
+
   it("R1 — cold single-source columns load: 1 getColumns, 0 listIndexes", async () => {
     const result = await loadTableColumns({ ...usersRequest });
     expect(result.columns[0]?.name).toBe("users");

apps/desktop/src/lib/metadata/tableMetadataCache.ts

@@ -17,6 +17,7 @@ export interface TableMetadata {
   columns: ColumnInfo[];
   indexes: IndexInfo[];
   primaryKeys: string[];
+  rowIdentityResolved?: boolean;
   cachedAt: number;
 }
 
@@ -331,11 +332,16 @@ export async function loadTableMetadata(request: TableMetadataRequest): Promise<
         // discovery independently unless an agent-backed PostgreSQL-family
         // relation must first report its visible schema for the index lookup.
         const resolveReportedSchema = (request.databaseType === "vastbase" || request.databaseType === "kingbase") && !request.schema;
-        const indexesPromise = resolveReportedSchema ? undefined : loadTableIndexes(request).catch((): IndexInfo[] => []);
+        let rowIdentityResolved = true;
+        const indexFailure = (): IndexInfo[] => {
+          rowIdentityResolved = false;
+          return [];
+        };
+        const indexesPromise = resolveReportedSchema ? undefined : loadTableIndexes(request).catch(indexFailure);
         const columnsResult = await columnsPromise;
         const columns = columnsResult.columns;
         const resolvedSchema = resolveReportedSchema ? columns.find((column) => column.resolved_schema)?.resolved_schema : request.schema;
-        const indexes = columns.length > 0 ? await (indexesPromise ?? loadTableIndexes({ ...request, schema: resolvedSchema }).catch((): IndexInfo[] => [])) : [];
+        const indexes = columns.length > 0 ? await (indexesPromise ?? loadTableIndexes({ ...request, schema: resolvedSchema }).catch(indexFailure)) : [];
         const primaryKeys = editableRowIdentifierColumns(request.databaseType as DatabaseType, columns, indexes, request.tableType);
         return {
           schema: resolvedSchema || undefined,
@@ -346,6 +352,7 @@ export async function loadTableMetadata(request: TableMetadataRequest): Promise<
           columns,
           indexes,
           primaryKeys,
+          rowIdentityResolved: rowIdentityResolved && columns.length > 0,
           cachedAt: columnsResult.cachedAt,
         };
       },
@@ -353,7 +360,7 @@ export async function loadTableMetadata(request: TableMetadataRequest): Promise<
     );
 
     // 必须在 unregister 前比较：最后一个在途加载注销时会顺带清掉代数记录
-    if (invalidationStampAtStart === (tableMetadataInvalidationStamps.get(scopeKey) ?? 0)) {
+    if (metadata.rowIdentityResolved && invalidationStampAtStart === (tableMetadataInvalidationStamps.get(scopeKey) ?? 0)) {
       tableMetadataCache.set(scope, metadata, { cachedAt: metadata.cachedAt });
     }
   } finally {